Check for picker stick of looms



Filed March 14, 1.946

F. H. PRESSLEY CHECK FOR PICKER STICK OF LOOMS 2 Sheets-Sheet 1 INVENTORFaux H. PRESSLEY ATTORNEY IF. H. PRESSLEY 2,452,955

CHECK FOR PICKER STICK 0F LOOMS 2 Sheets-Sheet 2 Filed M11: 14, 1946FIGQ4,

t8 INvEN'rQQ q- FELIX H. PRESSLEY BMW/1W ATTQRNLY Patented Nov. 2, 1948UNITED STATES PATENT OFFICE I CHECK FOR PICKER STICK OF LOOMS Felix n.Pressley, Piedmont, s. 0.

Application March 14, 1948, Serial No. 654,452

'a Claims. (01. 139-162) My invention relates to checks for pickersticks of looms.

An important object of the invention is to provide a device of the abovementioned character whereby the shuttle will be gradually checked by theimpact of the shuttle upon the picker stick.

A further object of the invention is to provide a check which isconnected with the picker stick, and will exert a braking action againstthe outward movement of the picker stick but freeing the picker stickfor inward movement.

A further object of the invention is to provide a check of the abovementioned character which may be securely mounted upon the sword, totravel therewith and which will not interfere with the operation of thepick arm, and will not cause a rebound action of the picker stick orshuttle,

A further object of the invention is to provide a check of the abovementioned character which may be mounted upon the sword near thelongitudinal center of the sword, whereby vibration of the check ismaterially reduced.

A further object of the invention is to provide a check of the abovementioned character which will properly stop the shuttle when it entersthe shuttle box and eliminate rebounding.

A further object of the invention is to provide a check which may beapplied to the left or right side of the loom without materiallyaltering the construction of the check.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame,

T Figure 1 is a fragmentary front elevation of a loom, showing my checkin side elevation and applie to the loom.

' Figure 2 is a plan view of the check, parts in horizontal section.

Figure 3 is a side elevation of the check,

Figure 4 is a transverse section taken on line 4-4 of Figure 3,

Figure 5 is an inner side elevation of the pawl carrying lever.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral l0 designates theframe side of the loom, in the lower portion of which is journaled therocker shaft ll, carrying at each end a parallel 12, upon which ismounted the parallel shoe I: of the picker stick I. This picker stick isoperated by the 1118 strap con- 2 nection l5, connected with the pickarm l6 mounted upon the pick shaft ll. This pick shaft is iournaled insuitable bearings [8, carried by the frame side. Rigidly mounted uponthe rocker shaft I I are swords I 9, only one being shown, and a lay 20is rigidly mounted upon the upper ends of the swords H9. The lay isprovided at each end with a shuttle box 2 I. The lay is moved back andforth by the usual crank shaft. The loom thus described is of theconventional type, such as shown in Patent 2,093,226.

My check for the picker stick and shuttle is in the nature of anattachment to be mounted upon the sword. The attachment is mounted uponthe sword. near the longitud nal center of the sword, preferablyslightly above the lug stra and the elevat on may be somewhat varied.The location is important as it brings the attachment down sufficientlybelow the lay. whereby the speed of the attachment is considerably belowthe speed of the lay. It has been found diflicult, to mount a check uponthe lay, due to excessive vibration. It has also been proposed to mountthe check upon the parallel, but this causes improper operation of thepicker stick. causing it to throw the shuttle in a zig-zag path. Thesedisadvantages are overcome by the arrangement and location of my pickerstick check.

My picker stick check embodies a horizontal bracket 22'. This bracketcomprises a horizontal strap or bar 22, provided at its outer end with alaterally offset U-shaped socket 23. The bar 22 has a clamp, including afixed jaw 24 and an adjustable Jaw 25, held in place by a bolt 26,extending through an elongated slot 21. The bar 22 is applied to thefront face of the sword i9 and is clamped to the sword by the jaws 24and 25. The bracket is therefore rigidly mounted upon the sword I9, nearits longitudinal center and is arranged near and above the lug strapconnection l5, as shown. The bracket comprises an outer horizontal arm28, carrying a transverse extension 29, to engage the transverse end 30of the socket 23. The extension 29 and end 30 have elongated horizontalslots 3| and 32 for receiving bolts 33-. The arm 28 may therefore behorizontally laterally adjusted for alignment with the shaft 35 is abrake drum 36, including an end 31 and a hub 38. The hub 38 is held inplace by a cotter pin 39 extending through an opening in the shaft 35 orby any other suitable means. The

3 brake drum 36 is provided upon its inner face with ratchet-teeth 40,which face counter-clockwise, Figure 3. Surrounding the drum 36 is abrake band 4|, having a suitable lining 42. One end of the brake band isattached to a stationary pin or screw 43, secured to the arm 28. Theopposite end of the brake band H is connected with a coupling 44,pivotally connected with a rod 45, slideabiy mounted in an opening 46,formed in a stationary bracket 41, rigidly attached to the arm 28. Theouter end of the rod 45 is screw-threaded for receiving a nut 48, and acompressible coil spring 49 surrounds the rod 45 and is disposed betweenthe nut 48 and bracket 41. The brake band 4| will yieldingly oppose thecounter-clockwise turning movement of the drum 36, Figure 3.

The numeral 56 designates a lever, disposed upon the outer end of thebrake drum 36, and provided between its ends with a hub i, having anopening 52, to rotatably receive the hub 38 upon its inner face. Thelever 50 carries pins 53, rigidly secured thereto and slideabiycontacting with the end 37. These pins 53 have pawls 54, pivotedthereon, and these pawls are moved outwardly into engagement with theratchet-teeth 46 by springs 55. The outer ends of these springs are heldwithin recesses 56, formed in the pawls 54, while their inner ends areheldwithin recesses 51 formed in the hub 5|. When the lever 50 is swungto the left, Figure 3, it will turn the brake drum 36 counter-clockwise,and when the lever 56 is swung to the right, Figure 3, the pawls 54 willtrip over the ratchet-teeth 40. A spring 58 is connected with the upperend portion of the lever 50 and is attached to the arm 28, and serves toswing the lever 50 to the left, to keep the pawls 54 in properengagement with the ratchet-teeth, but this spring is not sufficientlystrong to overcome the action of the brake device.

The lever 56 extends above the brake band 4i and has pivotal connectionat its upper end, as shown at 59, with a rod 60, having a transverseplate 6| rigidly secured thereto, as shown. This transverse plate has ayoke 62 rigidly secured thereto, and the yoke carries a bumper 63adjacent to the plate 6|. This bumper may be formed of leather or thelike. The yoke 62 receives the picker stick l4. A plate 64 is rigidlyattached to the picker stick by screws 65 or the like, and

this plate has openings 66, slideabiy receiving the arms of the yoke 62.

The numeral 61 designates a stationary stop or brunper, to limit theinward travel of the lever 50 and this bumper 61 is carried by a bracket68, secured to the arm 28. A stationary guide 69 engages the outer edgeof the brake drum 36 and this stationary guide is rigidly attached tothe end 31, as shown.

The operation of the device is as follows:

When the shuttle is entering the shuttle box to the left, Figure 1, thepicker s-tick has been shifted to the outer position so that the plate64 will engage the closed end of the yoke 62. This movement of thepicker stick is effected by the heel spring. When the shuttle enters theshuttle box to the left, it impinges against the picker stick, drivingit further outwardly. The picker stick now pulls the yoke 62 outwardly,which swings the lever 50 outwardly or to the left, Figures 1 and 3. Thepawls 54 now have holding engagement with the ratchet-teeth 40 and thebrake drum 36 is turned countereclockwise. The brake drum thereforeexerts a yielding picker stick will check the movement of the shuttle,without causing the shuttle to rebound. When the picker stick is swunginwardly the plate 64 will slide upon the arms of the yoke 62 until thepicker stick engages the bumper 63, at which time the picker stick willmove the rod 60 inwardly, returning the lever 56 to the startingposition, in engagement with the stop 61. The pawls 54 will trip overthe ratchet-teeth 46 when the lever 50 swings inwardly.

While I have shown the check as applied to the left side of the loom, itis obvious that another similar check is applied to the right side. Indoing this the bracket 22 is inverted and mounted upon the right swordl9, while the brake drum 36 y and associated elements will be mountedupon the arm 28 but the lever 50 and associated elements will also beinverted. In other words, the bracket 22' and all elements "carriedthereby will be inverted. I

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same and thatvarious changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of my invention or thescope of the subjoined claims.

Having thus described my invention, what I claim is: I

1. A picker stick check for use upon a loom having a sword, pick arm andpicker stick, said check comprising a bracket mounted upon the swordnear its longitudinal center, a brake drum rotatably mounted upon thebracket and having internal ratchet-teeth, a brake band mounted upon thebracket and surrounding the brake drum, a pivoted lever arranged nearthe brake drum, pawl means carried by the'lever and engaging theratchet-teeth, 'a plate secured to the picker stick and having openings,and a yoke receiving the picker stick and connected with the lever andincluding arms slideable within the openings of the plate.-

2. A picker stick check for use upon a loom having a sword, pick arm andpicker stick, said check comprising a support mounted upon the sword; abrake drum rotatably mounted-upon the support and having ratchet-teeth,a brake element engaging the brake drum, a pivoted leverv arranged nearthe brake drum, pawl means carried by the lever and engaging'theratchet-teeth, an element secured to the picker stick and having anopening, and a rod slideabiy mounted within the opening and includingmembers disposed upon opposite sides of the picker stick and also connected with the lever. 1 3. A picker stick check for use upona loomhaving a picker stick, said check comprising a support, a shaft carriedby the support, a brake drum having an-inner end and its outer end openand a tubular hub rotatable upon the shaft and also having internalratchet-teeth, a lever mounted upon the open side 10f the brake drum andto cause the lever to check the picker stick when checking or retardingaction upon the lever 56-.

which is transmitted to the Picker stick, and the the picker stick isstruck-bythe shuttle and to subs q n r se the eYeLand' a bumper,arranged to limit the inward movement of the lever.

4. In a 100m having a rocker shaft, a sword mounted upon therocker-shaft, a lay mounted upon the upper end of the sword, a parallelmounted upon the rocker shaft, a parallel shoe mounted upon theparallel, a picker stick mounted upon the parallel shoe and extending tothe lay, a pick arm mounted upon the frame side below the lay andextending to a point near the longitudinal center of the sword, and alug strap connection connected with the pick arm and engaging the pickerstick near its longitudinal center, the combination with the sword, of abracket arranged near and above the lug strap connection and mountedupon the sword near its longitudinal center and having a recess forreceiving the pick arm, a friction brake device mounted upon the bracketand arranged above the lug strap connection and including a brake drumhaving internal ratchet-teeth, a brake band surrounding the brake drum,a pivoted lever arranged near the brake drum, pawl means carried by thelever and engaging the ratchet-teeth, and a connecting element for thelever and picker stick and arranged above the lug strap connection andincluding spaced members arranged upon opposite sides of the pickerstick.

5. In a loom having a rocker shaft, a sword mounted upon the rockershaft, a lay mounted ,upon the upper end of the sword, a parallelmounted upon the rocker shaft, a parallel shoe mounted upon theparallel, a picker stick mounted upon the parallel shoe and extending tothe lay, a pick arm mounted upon the frame side below the lay, and a lugstrap connection connected with the pick arm and engaging the pickerstick near its longitudinal center, the combination with the sword, of afriction ibrake device arranged above the lug strap connection, means tomount the friction brake device upon the sword near the longitudinalcenter of the sword, and a connection between the friction Ibrake deviceand the picker stick and arranged above the lug strap connection andincluding spaced outer and inner members disposed upon opposite sides ofthe picker stick, the outer member being engaged by the picker stickwhen the picker stick moves to the outer position and the inner memberbeing then spaced a substantial distance from the picker stick so thatthe picker stick does not engage the inner member until it approachesthe inner position.

6. A picker stick check for a loom having a sword and a picker stick,said check comprising a brake drum having internal ratchet-teeth, meansto mount the brake drum upon the sword. a lever arranged near the brakedrum and mounted upon the means, a pawl carried by the lever andengaging the internal ratchet-teeth, a brake band engaging the peripheryof the brake drum and connected with the means, and connecting meansbetween the leverand the picker stick and including members arranged inthe path of travel and upon opposite sides of the picker stick, themembers being spaced 9. substantial distance so that there is lostmotion between the picker stick and the connecting means when the pickerstick moves from engagement with one member toward the other member.

7. In a loom having a rocker shaft, a sword,

mounted upon the rocker shaft, a lay mounted upon the upper end of' thesword; a parallel mounted upon the rocker shaft, a parallel shoe mountedupon the parallel, a picker stick mount ed upon the parallel shoe andextending toward' the lay, a pick arm mounted upon the frame below thelay and extending to a point near the longitudinal center of the sword,and a lug strap ternal ratchet teeth, a brake band surrounding:

the brake drum, a pivoted lever arranged near the brake drum, pawl meanscarried by :the lever and engaging the ratchet teeth, means connect ingthe picker stick and lever and arranged above the lug strap and causingthe friction brake device to check the picker stick.' whe'n the pickerstick is struck by the shuttle, and means to reset the lever.

8. In a loom having a rocker shaft, a sword i mounted thereon, a laymounted upon the'sword, a picker stick mounted upon the parallel shoeand extending to the lay, a pick arm mounted upon the frame below thelay and extending to a point near the longitudinal center of the sword;

and a lug strap connected with the pick arm and engaging the pickerstick near its longitudinal center, the combination with thesword, of asubstantially horizontal bracket provided between its inner' and outerends with a laterally pro;-

' jecting recess, the bracket being arranged near Number Name 294,680Sawyer Mar. 4, 1884 388,215 Morton Aug. 21, 1888 395,841 LittlefleldJan. 8,1889 395,842 Littlefleld Jan. 8, 1889 597,192 Thackery Jan. 11,1898" 914,360 Nevin Mar. 2, 1909 1,428,739 Youngquist Sept. 12. 1-9221,513,044 Jones Oct. 28. 1924 and above the lug strap connection andhaving its inner end mounted upon the sword near its longitudinal centerand the recess receiving the the lug strap and causing the frictionbrake de- 5 vice to check the picker stick when the picker stick isstruck by the shuttle, and means to reset the lever. i I FELIX H.PBESSLEY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Date

